2019 international practice exam mcq ap psych

Suppose you wanted to make 100 grams of water. what is the molar mass of water (h2o)?

What is the compound name for the formula [ru(en)2cl2]2+ and [co(en)cl2br]-

You just calculated that the heat of fusion for chloromethane is 6400 j/mol. the heat of fusion for hydrogen is 120 j/mol.? which of the following account for this difference? more than one correcta. chloromethane can absorb more energy at the same temperature. b. hydrogen has stronger intermolecular forces than chloromethane. c. hydrogen molecules can pack more closely than chloromethane molecules. d. chloromethane experiences dipole-dipole interactions. e. chloromethane has a higher molar mass than hydrogen.